12th Business Maths Book Review


The 12th Business Maths Book was meticulously created by its adept authors to align with the latest Samacheer Kalvi book pattern, thus relieving teachers of their lesson burden while serving as an essential student-friendly guide.

This textbook introduces the universal business mathematics you will require no matter which profession you choose, be it marketing, accounting, production, human resources, or economics. From taxes and gross earnings calculations through salary calculations and interest rate decisions and intelligent monetary decisions both personally and professionally – these will all come into play!


In this practical, thorough book, students gain the skills required to manage both personal and business finances effectively. Students learn about taxes, gross and net earnings, purchasing power, money management, comparing prices, and managing inventory; accounting concepts such as double-entry bookkeeping statements and journal entries; ratio analysis, percent analysis, break-even point, and profitability are introduced along with concepts from arithmetic, algebra, and geometry to help master business mathematics.

The text uses a conversational style, personal and professional applications, and an abundance of guided examples to make complex topics understandable. It simplifies annuity types and variable calculations, explains algebraic symbols use, includes structured exercises and relevant calculator practice problems for practice problems with relevant calculators, and demonstrates essential mathematical techniques such as reduced number of steps problem-solving methods as well as reduction of steps required in problem-solving; it does not, however, include advanced calculus concepts like differentiation or integration; instead, this course typically covers more applied topics such as matrix operations.

This book conforms to the 12th book syllabus promulgated by the Tamil Nadu State Board Council. The textbook is accessible for students to grasp and includes a self-evaluation workbook so they may test themselves and assess their knowledge.


No matter your level in business maths, knowing about variables is an invaluable skill that will allow you to solve complex problems more efficiently and more quickly. They’re also integral components of algebra – which you will be learning in this textbook – with dependent and independent variables playing various roles when creating equations and their interactions helping deepen your grasp of this language as you explore further mathematical doors in future!

Variables are numbers or characteristics with variable values that can take on various meanings, often used to represent unknown quantities such as height or earnings from work. Variables help people better comprehend and solve complex problems by defining all possible values associated with them.

Variables can be divided into two major groups: categorical and numeric variables. Categorical variables, like eye color, cannot be quantified. At the same time, numeric variables can be measured and have any value within their range. Finally, this category of numeric variables is further subdivided into ordinal and continuous subcategories because a constant variable can take any value within its range, while an ordinal one requires it to fall into an ordered set.


Percentages are an essential tool in business for communicating proportions. They’re used to calculate discounts, markups, profit margins, and investment returns, as well as budget management and investment returns analysis. Plus, they play an essential part in sales tax calculation as well as refund calculations – meaning mastery of percentages is an indispensable skill needed to be successful in today’s globalized world.

A percentage is an expression that represents the proportion of something relative to 100; typically denoted with the symbol ‘%’ but sometimes also written out as ‘pct’ or ‘%f,’ it provides a valuable method of communicating proportions such as the proportion of students who identify themselves as male.

Teaching percentages requires creating an apparent link between them and fractions. Pupils may perceive them as separate from fractions; to encourage this understanding, they should be reminded throughout the year of this connection when required to find equivalent fractions.

SURA’s 12th Business Maths Self-Evaluation Workbook contains concise lessons designed to reduce the workload for students while acting as a study guide. Following Samacheer Kalvi’s pattern and using simple language that students easily understand, this workbook contains questions and answers for both volumes as well as models for standard quarterly and half-yearly examinations.


Ratios are an invaluable way of comparing quantities. Their use in mathematics and real-life spans numerous situations; in this episode of I 3 Math, we will investigate how ratios work and some of their various formats; we will also consider their relationship to fractions and how to simplify them.

Ratios are comparisons between two numbers that indicate their relative sizes in relation to one another, such as 17:13 between people who prefer walking versus cycling. When writing out ratios, it is usually written with colons (:) and fraction symbols; if this isn’t feasible, the use of “is to” or ‘to” can also work well.

Contrary to percentages, ratios can be simplified down to their most fundamental whole numbers by “reducing” them; when both terms share an identical unit value, this process is known as proportioning and should only occur where both units match precisely.

In this example, we might state that in a park, there are three geese for every 16 ducks; this represents their ratio. This expression can take many forms: fraction, colon, or ratio.


Proportions are an essential concept in business maths and daily life, serving many purposes, from doubling recipes to solving business problems. Understanding proportions can make life much simpler when making such changes; when duplicating recipes, it allows us to know precisely how much of each ingredient to add at any one time. Proportions also play an integral part in solving these challenges: in order to use proportions successfully, we need three elements: ratio criteria, order of terms, and number of terms required to solve proportions.

When two quantities are directly proportional, their magnitudes match. For instance, traveling by train takes over an hour, which equals traveling 500km over five hours. This equation states: 100km/hr = 500km/5hrs.

Direct proportion is the opposite of indirect proportion, which describes a relationship between two quantities whereby one increases when the other decreases or vice versa. Its equation is y = 1/x; this term can also be written out as “y/x.”

To solve a proportion, it is recommended to work on two terms at once and express them in a fractional format. This makes the problem more manageable, enabling you to isolate the unknown variable more easily and isolate its location within it. Once separated, cross-multiplication can be used to eliminate any remaining residue by multiplying one fraction against its denominator – producing a uniquely solvable equation.

Profit and Loss

Profit and loss calculations are an integral component of business math. They allow you to calculate all the costs involved with producing an item before determining its gross or net profit margins, as well as helping determine whether your company is making enough money to stay afloat or not.

Business mathematics requires extensive knowledge. It involves intricate formulae and measurements as well as calculations used in all kinds of businesses for tasks such as profit and loss analysis, interest calculations, tax filings, and payroll responsibilities.

Business math is essential for those aspiring to a career in business. Understanding its mathematical tools to maximize earnings while decreasing expenses is vital in making intelligent monetary decisions both personally and professionally. Business mathematics covers topics like taxes, product prices, and currency exchange; furthermore, it discusses making informed financial decisions for both personal and professional reasons.

Finding an accessible textbook to teach business math is essential to learning it effectively, with its fundamental concepts laid out clearly and logically, illustrated with real-life examples that help students grasp them quickly, and providing practice exercises and problem sets to build confidence with the subject matter.

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